- Platform information:
- Hardware: RaspberryPi 3b
- OS: OpenHabian
- openHAB version:2.5M3
- Issue of the topic: Cannot generate Charts
Hi all, I have a problem to create a chart of my items:
My items file:
Number ControlloCarichi_Ch1TrasmissionePotenza "Consumo istantaneo [%.2f KWh]" <energy> (gControlloCarichi) {channel="knx:device:89dfb93f:44"}
My rrd4j.persist:
Strategies {
// for rrd charts, we need a cron strategy
everyMinute : “0 * * * * ?”default = everyChange
}
Items {
// persist items on every change and every minute
ControlloCarichi_Ch1TrasmissionePotenza : strategy = everyChange, everyMinute
OutdoorTemp_Clima_Sala : strategy = everyChange, everyMinute
}
My sitemap:
Frame label="grafico" {
Chart item= OutdoorTemp_Clima_Sala period=D refresh=30000 service="rrd4j"
}
My logs:
2019-09-09 16:08:46.941 [WARN ] [thome.ui.internal.chart.ChartServlet] - Chart generation failed: null
I have the items files in /var/lib/openhab2/persistence/rrd4j but I don’t know how to check if they are populated with data. Only stranges configuration is that I made a LINK of /var/lib/openhab2/persistence/ to an external disk…